AppSync 4.0 for iOS 4 jailbroken is now available in the Cydia. AppSync 4.0 patches MobileInstallation file on iOS 4 so that you may install cracked apps on iOS 4. Once you install AppSync OS 4.0 on your iDevice running iOS 4, you’ll be able to install cracked .ipa apps on your iDevice.

This Method of installing cracked games / apps does NOT need any WIFI connection or SSH into iPhone. Using this method you will be able to install cracked apps on iPhone / iPod Touch iOS 4.2.1, 4.1, 4.0, 3.1.3, 3.1.x after running a single file from your PC. So, it works on all iPhones (4, [...]